旱地花生荚果发育与施肥关系的研究

Research on Relationship between the Pod Development of Dryland Peanut and Fertilizer Application

对不同施肥水平下旱地花生荚果发育动态的研究结果表明:旱地花生荚果重量和体积增长过程呈“慢—快—慢”变化,可拟合成Logistic方程,荚果重量最大增长日为幼果形成后43￣48d,最大增长速率为0.3791￣0.5947g/(株·d);荚果体积最大增长日为幼果形成后36￣39d,最大增长速率为0.8487￣1.6684cm3/(株·d)。荚果重量和体积快速增长期持续20￣30d。随施肥量的增加,荚果重量和体积最大增长日出现时间推迟。

The study focused on pod development of dryland peanut by different treatments of fertilizer application. The results showed that pod weight and pod volume increasing could be characterized as a 'slow-rapid-slow' rhythm. It's cumulative dynamics was simulated by a Logistic eguation. The growth rate of pod weight had a peak of 0.3791~0.5947g/(plant·d ) at 43~48day after emergence, and the peak(0.8487~1.6684cm3/<plant·d>)of growth rate of pod volume occurred at 36~39day after emergence, the rapid growth period was 20~30days.Date of peak growth rate of pod weight and pod volume had a changing process from earlier to later with an increase of the amount of fertilizer application.